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42bac88a211a7fac9dd1bfe7d1e45e59ac50c24f
glibc/malloc
History
Szabolcs Nagy 42bac88a21 malloc: Use global flag instead of function pointer dispatch for mtag 
A flag check can be faster than function pointers because of how
branch prediction and speculation works and it can also remove a layer
of indirection when there is a mismatch between the malloc internal
tag_* api and __libc_mtag_* target hooks.

Memory tagging wrapper functions are moved to malloc.c from arena.c and
the logic now checks mmap_enabled.  The definition of tag_new_usable is
moved after chunk related definitions.

This refactoring also allows using mtag_enabled checks instead of
USE_MTAG ifdefs when memory tagging support only changes code logic
when memory tagging is enabled at runtime. Note: an "if (false)" code
block is optimized away even at -O0 by gcc.

Reviewed-by: DJ Delorie <dj@redhat.com>
2021-03-26 11:03:06 +00:00
..
alloc_buffer_alloc_array.c
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alloc_buffer_allocate.c
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2021-01-02 12:17:34 -08:00
alloc_buffer_copy_bytes.c
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2021-01-02 12:17:34 -08:00
alloc_buffer_copy_string.c
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2021-01-02 12:17:34 -08:00
alloc_buffer_create_failure.c
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2021-01-02 12:17:34 -08:00
arena.c
malloc: Use global flag instead of function pointer dispatch for mtag
2021-03-26 11:03:06 +00:00
Depend
added rt to malloc/Depend [BZ #27132]
2021-02-23 10:04:45 +01:00
dynarray_at_failure.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
dynarray_emplace_enlarge.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
dynarray_finalize.c
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2021-01-02 12:17:34 -08:00
dynarray_resize_clear.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
dynarray_resize.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
dynarray-skeleton.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
dynarray.h
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
hooks.c
malloc: Refactor TAG_ macros to avoid indirection
2021-03-26 11:03:06 +00:00
Makefile
malloc: Turn tst-mallocstate into a non-internal test
2021-03-09 21:07:24 +01:00
malloc-hooks.h
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2021-01-02 12:17:34 -08:00
malloc-internal.h
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malloc.c
malloc: Use global flag instead of function pointer dispatch for mtag
2021-03-26 11:03:06 +00:00
malloc.h
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mallocbug.c
Reformat malloc to gnu style.
2014-01-02 09:40:10 +01:00
mcheck-init.c
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mcheck.c
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mcheck.h
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memusage.c
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memusage.sh
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memusagestat.c
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morecore.c
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mtrace.c
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mtrace.pl
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obstack.c
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obstack.h
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2021-01-02 12:17:34 -08:00
reallocarray.c
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2021-01-02 12:17:34 -08:00
scratch_buffer_dupfree.c
malloc: Add scratch_buffer_dupfree
2021-01-05 11:33:16 -03:00
scratch_buffer_grow_preserve.c
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scratch_buffer_grow.c
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scratch_buffer_set_array_size.c
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2021-01-02 12:17:34 -08:00
set-freeres.c
Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder
2021-03-01 15:58:01 +01:00
thread-freeres.c
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tst-alloc_buffer.c
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2021-01-02 12:17:34 -08:00
tst-calloc.c
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tst-dynarray-at-fail.c
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tst-dynarray-fail.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
tst-dynarray-shared.h
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
tst-dynarray.c
malloc: Sync dynarray with gnulib
2021-02-09 16:57:54 -03:00
tst-free-errno.c
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tst-interpose-aux-nothread.c
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tst-interpose-aux-thread.c
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tst-interpose-aux.c
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tst-interpose-aux.h
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tst-interpose-nothread.c
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tst-interpose-skeleton.c
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tst-interpose-static-nothread.c
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tst-interpose-static-thread.c
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tst-interpose-thread.c
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2021-01-02 12:17:34 -08:00
tst-mallinfo2.c
tst-mallinfo2.c: Remove useless trailing semicolon for macro
2021-02-01 19:28:00 +01:00
tst-malloc_info.c
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tst-malloc-backtrace.c
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tst-malloc-fork-deadlock.c
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2021-01-02 12:17:34 -08:00
tst-malloc-stats-cancellation.c
[BZ #22830] malloc_stats: restore cancellation for stderr correctly.
2018-02-10 16:24:17 -05:00
tst-malloc-tcache-leak.c
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tst-malloc-thread-exit.c
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tst-malloc-thread-fail.c
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tst-malloc-too-large.c
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tst-malloc-usable-static-tunables.c
Initialize tunable list with the GLIBC_TUNABLES environment variable
2016-12-31 23:49:24 +05:30
tst-malloc-usable-static.c
Add framework for tunables
2016-12-31 23:49:24 +05:30
tst-malloc-usable-tunables.c
Initialize tunable list with the GLIBC_TUNABLES environment variable
2016-12-31 23:49:24 +05:30
tst-malloc-usable.c
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tst-malloc.c
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tst-mallocfork2.c
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2021-01-02 12:17:34 -08:00
tst-mallocfork.c
Fix malloc tests build with GCC 10.
2019-06-10 22:12:08 +00:00
tst-mallocstate.c
malloc: Turn tst-mallocstate into a non-internal test
2021-03-09 21:07:24 +01:00
tst-mallopt.c
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tst-mcheck.c
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tst-memalign.c
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tst-mtrace.c
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tst-mtrace.sh
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tst-mxfast.c
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tst-obstack.c
Modify several tests to use test-skeleton.c
2014-11-05 15:24:08 +05:30
tst-posix_memalign.c
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tst-pvalloc-fortify.c
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tst-pvalloc.c
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tst-realloc.c
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tst-reallocarray.c
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2021-01-02 12:17:34 -08:00
tst-safe-linking.c
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2021-01-02 12:17:34 -08:00
tst-scratch_buffer.c
malloc: Add scratch_buffer_dupfree
2021-01-05 11:33:16 -03:00
tst-tcfree1.c
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tst-tcfree2.c
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tst-tcfree3.c
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tst-trim1.c
* malloc/tst-trim1.c: New file.
2007-12-16 22:57:57 +00:00
tst-valloc.c
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Versions
malloc: Add scratch_buffer_dupfree
2021-01-05 11:33:16 -03:00